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What is Gold Dredging

Suction Nozzle or Power Jet?

GETTING A CLAIM

 

 


 

 

 

 

 

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Gold panning instructions

Hire Contract

KAC1 KEENE COMPRESSOR information

KEENE catalogue

LEWIS winch manual

Parts List / Drawing T80 Compressor

P180 THREADED SHAFT PUMP ASSEMBLY

P350 KEY WAY SHAFT PUMP ASSEMBLY

P350 THREADED SHAFT PUMP ASSEMBLY

P500 KEY WAY SHAFT PUMP ASSEMBLY

P500 THREADED SHAFT PUMP ASSEMBLY

P500 KEY WAY DIAGRAM

P500 THREADED DIAGRAM

SBRS Mounting Instructions

Smelt your own gold with a Kwik Kiln

Water Pump Priming Instructions

 

User Manuals Minelab Gold Detectors

GOLD MONSTER 1000

GPX 4500

GPX 5000

GPZ 7000

SDC2300

 

Minelab Coil Selection Guide

 

 

What is Gold Dredging?

To Dredge for Gold you need a Gold Dredge.
This is a machine on pontoons that has a water pump and sluice box on it.
A suction hose is run from the gold dredge to the riverbed where the operator manoeuvres the nozzle to suck up gold bearing gravel.  
Folks who have never seen a gold dredge often assume that gravel is sucked into the water pump then discharged over the sluice. This is not the case.
The water pump sucks fresh river water which is then injected into the dredge hose via a Suction Nozzle or Power Jet at reasonable force. This action creates a venturi effect that creates the required suction.

Suction Nozzle or Power Jet?

A suction nozzle is the traditional method for creating the venturi. The advantage of using this method is that it can be operated in water as shallow as the dredge will float in.
The down side is you need two hoses, one from the pump and the other being the main suction hose gravel goes up. Having two hoses can be cumbersome.

suction nozzle

A Power Jet is more efficient because there is a shorter pressure hose from the pump and therefore less friction losses. The Power Jet enters the suction line just before the sluice, which means the gravel is being “pulled” up the hose rather than “pushed” by a suction nozzle. This can help prevent blockages. The advantage with this is you only need one hose underwater. However this system requires you to be in water no less than approximately half a metre deep.

Power Jet

GETTING A CLAIM

Gold is classed as a "statutory mineral" under the Crown Minerals Act 1991. What this means is that no matter what the Crown owns all Gold in New Zealand and a permit is needed to prospect, explore or mine. To obtain a permit an application must be made.

NZPAM have implemented a new online permitting system which replaces the old permit management system. 

The NZP&M Online Permitting System enables permit applicants to apply for permits online, for permit holders to manage permit changes online as well as access more information regarding permit obligations and compliance.

Specific information regarding what needs to be submitted can be found through the above link. The below outlines roughly what this is:

  • Correct fee (refer below)
  • Applicant details; including previous experience and financial details.
  • A plan clearly defining the area being applied for (a cadastral plan showing legal boundaries is preferred; however a topographical plan or aerial survey may be used).
  • A work programme which clearly sets out all of the work intended to be undertaken during the duration of the permit. The work programme also should include an estimate of expenditure.
  • Specific information regarding what needs to be submitted for each of the above sections can be found on the form itself – which serves as both Form and Information Sheet.

 

Prospecting - To identify land likely to contain exploitable deposits.
Application for Prospecting Permit - $3450.00

Exploration - To identify deposits and evaluate the feasibility of mining.
Application for Exploration Permit - $3,450.00

Mining - Economic recovery of an identified resource.
Application for Mining Permit Tier 2 - $5,750.00
One may choose to skip first two procedures and apply for mining (recommended for small scale mining/dredging operations).

Application for Mining Permit Tier 1 - $16,675.00 (bigger operations)

All fees are in $NZD and include GST (Goods and Services Tax).

For a map of current claims visit:
http://data.nzpam.govt.nz/permitwebmaps?commodity=minerals

However, to make gold panning a more accessible experience, sixteen areas have been set aside in the South Island where anyone can freely enjoy recreational gold mining without the need for a mining permit. These areas are called gold fossicking areas and have been designated under the Crown Minerals Act 1991. Fossicking generally means searching for and collecting materials from surface of land or by digging by hand.

You can view all of the areas on www.paydirt.co.nz, simply select "Gold Fossicking Area" from the Permit filters Type (top left hand corner).